Question

22.6 30.3 57 66.3 72.4 90.9 (a) Calculate $\sum x$. $\sum x$ = 337.3 X Calculate $\sum x^2$. $\sum x^2$ = 22216.19 X (b) Use the results of part (a) and the appropriate computation formulas to compute the sample variance $s^2$ and sample standard deviation s2 = 650.86 s = 25.512 X X

          22.6 30.3 57 66.3 72.4 90.9
(a) Calculate $\sum x$.
$\sum x$ = 337.3
X
Calculate $\sum x^2$.
$\sum x^2$ = 22216.19
X
(b) Use the results of part (a) and the appropriate computation formulas to compute the sample variance $s^2$ and sample standard deviation
s2 = 650.86
s = 25.512
X
X

22.6 30.3 57 66.3 72.4 90.9
(a) Calculate ∑ x.
∑ x = 337.3
X
Calculate ∑ x^2.
∑ x^2 = 22216.19
X
(b) Use the results of part (a) and the appropriate computation formulas to compute the sample variance s^2 and sample standard deviation
s2 = 650.86
s = 25.512
X
X

Added by Javier T.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Adrian Olano

11/11/2022

Step 1

6 + 30.3 + 57 + 66.3 + 72.4 + 90.9 = 337.3. Show more…

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22.6 30.3 57 66.3 72.4 90.9 (a) Calculate Σχ. Σχ = 337.3 X Calculate 2x2. Σχ² = 22216.19 X (b) Use the results of part (a) and the appropriate computation formulas to compute the sample variance s² and sample standard deviation s2 = 650.86 s = 25.512 X X